Figure 1From: The effect of metformin and thiazolidinedione use on lung cancer in diabetics Survival analysis of patients with DM and lung cancer. A. Those receiving metformin and/or a TZD versus those who were not. B. Those receiving metformin alone versus those receiving neither metformin nor a TZD. C. Those receiving a TZD alone versus those receiving neither metformin nor a TZD.Back to article page